Rocker Jon Bon Jovi enjoyed some fun in the sun just off the coast of southern France aboard the boat, C2, yesterday. Jon rocked a pair of shades and a baseball cap that appropriately read "C2." Jon was joined on board the boat by fellow Hollywood A-listers, Michael Douglas and Catherine Zeta-Jones. The group sailed along the waters of the French Riviera in the St. Tropez sun as they shared a few laughs.

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OK! NEWS: CATHERINE ZETA-JONES GETS TREATED FOR BIPOLAR DISORDER; MICHAEL DOUGLAS TALKS TO OK!

Catherine and Michael have reportedly been cruising around the Mediterranean on their family yacht. The pair has been through a lot in the past year with Catherine entering mental health treatment for bi-polar disorder and Michael's battle with throat cancer. The two have seemed both happy and healthy lately and OK! couldn't be happier for them!

OK! GALLERY: CANCER-FREE MICHAEL DOUGLAS & CATHERINE ZETA-JONES CELEBRATE HIS ICON STATUS

Catherine recently made her way back into the spotlight last month after her treatment had ended when she presented the award for Best Performance by an Actor in a Leading Role in a Play at this year's Tony Awards.